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package filters;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/**
 *
 * @author bruno
 */
public class filterLogin implements Filter {
 
    public void init(FilterConfig filterConfig) throws ServletException {
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        if (request instanceof HttpServletRequest) {
            HttpSession sesion = ((HttpServletRequest) request).getSession();
            if (sesion.getAttribute("login") != null) {
                //if (sesion.getAttribute("login") instanceof Persona) {
                  //  chain.doFilter(request, response);
                //}
            } else {
                ((HttpServletResponse) response).sendRedirect("index.jsp");
            }
        } else {
            chain.doFilter(request, response);
        }
    }

    public void destroy() {
    }
}
